<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category  Zend
 * @package   Zend_File_Transfer
 * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 * @version   $Id: Transfer.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * Base class for all protocols supporting file transfers
 *
 * @category  Zend
 * @package   Zend_File_Transfer
 * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_File_Transfer
{
	/**
	 * Creates a file processing handler
	 *
	 * @param string $protocol Protocol to use
	 */
	public function __construct($protocol = null)
	{
		require_once 'Zend/File/Transfer/Exception.php';
		throw new Zend_File_Transfer_Exception('Implementation in progress');

		switch (strtoupper($protocol)) {
			default:
				$adapter = 'Zend_File_Transfer_Adapter_Http';
				break;
		}

		if (!class_exists($adapter)) {
			require_once 'Zend/Loader.php';
			Zend_Loader::loadClass($adapter);
		}

		$this->_adapter = new $adapter();
		if (!$this->_adapter instanceof Zend_File_Transfer_Adapter) {
			require_once 'Zend/File/Transfer/Exception.php';
			throw new Zend_File_Transfer_Exception("Adapter " . $adapter . " does not extend Zend_File_Transfer_Adapter'");
		}

		return $this->_adapter;
	}
}
